The EX2100e Excitation Control Regulator system is GE’s most recent state-of-the-art control system for steam, gas, or hydro generators for both new and retrofit units. Control hardware and software design is closely coordinated between GE’s system and controls engineering to ensure delivery of a true system solution. Integration is seamless between Excitation Control systems, Turbine Control systems, Static Starter Control systems, Integrated Control Systems (ICS), and the Human-machine Interface (HMI). For stand-alone retrofit applications, integration with customer distributed control systems (DCS) through serial or Modbus® Ethernet is supported. This document specifically addresses applications for the 35 A and 120 A (nominal) series of EX2100e Control Regulator systems.

flexibility for Thyristor and Regulator systems. For small Regulator systems, two pulse-width modulated (PWM) power converter modules use Insulated Gate Bipolar Transistors (IGBT) to provide up to 35 A or 120 A nominal output. These systems can support the following applications:
• Saturable Current Transformers / Power Potential Transformers (SCT/PPT) regulator
• Brushless exciter regulator
• Direct current (dc) rotating exciter regulator
In the SCT/PPT regulator and dc rotating exciter regulator applications, the EX2100e Regulator system can de-sensitize the effect of the exciter time constant. It incorporates direct measurement of the generator field voltage and field current to enhance speed of response to system transients.
The architecture is a single control with a single Power Control Module (PCM) or dual control with dual PCM, including a customer interface sub-system, optional diagnostic local operator interface (touchscreen), optional control operator interface (COI) remote touchscreen interface, control power input module, and PCM. The PCM consists of a bridge interface sub-system, power bridge, optional ac and dc filter networks, and alternating current (ac) and/or dc isolation devices. For expanded input and output (I/O) capability, either VersaMax® or Mark* VIe control IONet I/O modules may be added.

The EX2100e Regulator system supports Ethernet local area network (LAN) communication to the following:
• Turbine controls and ICS, HMI, Proficy*-based Historian, Programming Interface (PI-based) Historian, Onsite Monitoring System (OSM), and COI
• Extended I/O modules using the Ethernet Global Data (EGD) protocol
• Customer DCS through Ethernet or Modbus Ethernet remote terminal unit (RTU)
• ToolboxST* application

• GE Onsite Support* for monitoring and diagnostics

EX2100

Testing
The following section is a brief description of the quality assurance tests performed on each exciter.
5.1 Routine Factory Tests
Each excitation control is subjected to routine factory tests including, but not restricted to, the following:
• Circuit continuity check
• Di-electric (hi-pot) tests in accordance with IEEE standard 421B
• Functional check of all components and devices for proper operation
5.2 Customer Witness Tests
After routine factory tests are complete, the customer can participate in a witness test.
Two options are available
• Option A: The customer examines the appearance and workmanship of the equipment, then reviews the engineering and test paperwork. This is a standard service for no additional charge.
• Option B: The customer witnesses a demonstration of the hardware and software. This is an added-cost item to the customer.